发明名称 |
Method and apparatus for detecting overpressured zone ahead of a drill bit using resistivity and seismic measurements |
摘要 |
A resistivity logging tool suitable for downhole use includes a transmitter and two spaced apart receivers. The measured signals are inverted to determine the distance to an overpressured zone in the earth formation. The overpressured zone may be a transition zone in resistivity. The direction of drilling may be controlled based on the determined distance. Optionally, seismic-while drilling measurements may be made from which a separate estimate of the distance can be obtained. The SWD¹ measurements may also be processed to estimate the pore pressure. |
申请公布号 |
GB2445484(A) |
申请公布日期 |
2008.07.09 |
申请号 |
GB20080003351 |
申请日期 |
2006.08.15 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
TSILI WANG;DANIEL T GEORGI;MICHAEL H PHILLIPS;EDUARD H VAN WIJK;CHRISTIAN FULDA |
分类号 |
G01V3/30;G01V11/00 |
主分类号 |
G01V3/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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